Bumps [hex-literal](https://github.com/RustCrypto/utils) from 0.1.4 to 0.2.0. - [Release notes](https://github.com/RustCrypto/utils/releases) - [Commits](https://github.com/RustCrypto/utils/compare/hex-literal-v0.1.4...hex-literal-v0.2.0) Signed-off-by: dependabot[bot] <support@dependabot.com>